Staedtler Techset Pro Pens

Staedtler Techset Pro Pens

Technical Drawing Pen set combines classical elements of technical drawing and writing to offer the ideal tools for sketching, graphic design and writer. Packaged in a sturdy reusable plastic case. Refill cartridges are easy to exchange through pen sleeve. Smudge-proof, resists bleeding. Black pigmented ink is water-based, fast-drying and acid-free. Set includes one barrel with four different line width cartridges: .25mm, .35mm, .50mm, .70mm. The barrel is refillable with new cartridges that include a new ink supply and a new tip. Tips won't clog even when caps are left off for up to eight hours.